System Messages And Lights; Double Unit Operation; Table 3. Signal Light Status - Nortec NH Series Installation Manual

H. SYSTEM MESSAGES AND LIGHTS
(1) Table 3 describes general signal light status meanings.
Yellow Green
OFF OFF
OFF ON
ON OFF
ON ON
BLINK OFF
OFF BLINK
OFF OFF
(2) Table 4 describes common status messages and the lights displayed for each and their
meaning. For a list of warnings and faults, see Chapter 10-40 Troubleshooting.
I.

DOUBLE UNIT OPERATION

(1) The unit will report only one cylinder at a time if the unit was ordered without coupled
circuits. You will notice on the screen the indication of which cylinder you are
monitoring and in the lower right the option to monitor the alternate cylinder.
10-20
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2008-08-28

Table 3. Signal Light Status

Red
OFF Unit is on standby or humidifier has just been energized but has not sensed
production of steam yet.
OFF Humidifier senses production of steam.
OFF An attention state exists that should not prevent the unit from producing steam
when the controls call for it. Check the message on the screen to try to correct it.
OFF Prepare to replace cylinder or normal startup operation. May also indicate an
attention during operation. Check the message on the screen to try to correct it.
OFF Manual Drain On with software drain switch.
OFF Unit sees a demand, but safeties are open.
ON Operation fault (unit will not run).